第一章
1.1 public class Test{
}
public static void main(String[] args){ }
System.out.println(\);
System.out.println(\); System.out.println(\);
1.2 public class Test{
}
public static void main(String[] args){ }
for(int i = 0;i <= 4;i++){
System.out.println(\); }
1.3 public class Test{
}
public class Test{ }
public class Test{ }
public static void main(String[] args){ }
System.out.println(\); System.out.println(\); System.out.println(\); System.out.println(\);
public static void main(String[] args){ }
System.out.println(\); System.out.println(\); System.out.println(\); System.out.println(\); public static void main(String[] args){ }
System.out.println(\); System.out.println(\); System.out.println(\); System.out.println(\);
1.4 public class Test{
public static void main(String[] args){
System.out.println(\);
}
}
System.out.println(\); System.out.println(\); System.out.println(\); System.out.println(\);
1.5 public class Test{
}
public static void main(String[] args){ }
System.out.println((9.5*4.5-2.5*3)/(45.5-3.5));
1.6 public class Test{
}
public static void main(String[] args){ }
int i = 1,sum = 0; for(;i <= 9;i++) sum += i;
System.out.println(sum);
1.7 public class Test{
; }
1.8 public class Test{ }
public static void main(String[] args){ }
final double PI = 3.14; double radius = 5.5;
System.out.println(2 * radius * PI); System.out.println(PI * radius * radius); }
System.out.println(4*(1.0-1.0/3+1.0/5-1.0/7+1.0/9-1.0/11+1.0/13))public static void main(String[] args){
System.out.println(4*(1.0-1.0/3+1.0/5-1.0/7+1.0/9-1.0/11));
1.9 public class Test{
}
public static void main(String[] args){ }
System.out.println(7.9 * 4.5); System.out.println(2 * (7.9 + 4.5));
1.10 public class Test{
public static void main(String[] args){
double S = 14 / 1.6;
double T = 45 * 60 + 30; double speed = S / T; System.out.println(speed);
}
}
1.11 public class Test{
public static void main(String[] args){ }
int BN = 312032486; //original person numbers double EveryYS,EveryYBP,EveryYDP,EveryYMP; EveryYS = 365 * 24 * 60 * 60; EveryYBP = EveryYS / 7; EveryYDP = EveryYS / 13; EveryYMP = EveryYS / 45;
int FirstYP,SecondYP,ThirdYP,FourthYP,FivthYP;
FirstYP = (int)(BN + EveryYBP + EveryYMP - EveryYDP); SecondYP = (int)(FirstYP + EveryYBP + EveryYMP - EveryYDP); ThirdYP = (int)(SecondYP + EveryYBP + EveryYMP - EveryYDP); FourthYP = (int)(ThirdYP + EveryYBP + EveryYMP - EveryYDP); FivthYP = (int)(FourthYP + EveryYBP + EveryYMP - EveryYDP); System.out.println(FirstYP); System.out.println(SecondYP); System.out.println(ThirdYP); System.out.println(FourthYP); System.out.println(FivthYP);
}
1.12 public class Test{ }
1.13 import java.util.Scanner;
public static void main(String[] args){ }
double S = 24 * 1.6;
double T = (1 * 60 + 40) * 60 + 35; double speed = S / T; System.out.println(speed);
public class Test{
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.println(\); double a = input.nextDouble(); double b = input.nextDouble(); double c = input.nextDouble(); double d = input.nextDouble(); double e = input.nextDouble();
(完整版)Java语言程序设计(基础篇)原书第十版梁勇著第一章答案
